利用多源数据融合研究长白山天池火山的喷发期次及空间分布

利用ERS－2 SAR,Landsat TM和全色航空照片等图像,结合测年、野外地质考察等资料,在GIS平台上利用多源数据融合、小波变换、神经元网络分类等手段,研究了长白山天池火山的喷发期次及分布,为火山灾害制图及危险性评价提供了重要依据。     

多源遥感数据沙尘暴强度监测的信息可比方法

综述了利用遥感技术进行沙尘暴监测研究的国内外进展，提出了利用多源遥感数据识别和提取沙尘暴信息的新方法，利用近红外1．6μm波段特性，构建了可比沙尘强度指数。研究表明：利用卫星探测器11μm，12μm波段差值进行沙尘暴信息识别和提取，可以达到满意的效果，但不能刻画沙尘暴强度；构建的可比沙尘强度指数，能够解决多源遥感数据由于卫星平台、监测时间、监测区域等不同因素导致的监测结果不可比的问题；同时监测结果与地面气象站监测数据有较好的一致性，能够从时间、空间两方面刻画沙尘暴强弱分布，可以作为沙尘暴定量研究的参数，为利用多源遥感数据持续定量地监测沙尘暴的起源、移动、传输路径、扩散等待征奠定了基础。     

Political skill as an indicator of promotability among multiple rater sources

Recognizing that organizations are inherently political arenas, investigating the relationship between political skill and various individual and organizational outcomes is increasing in the literature because employees need political skill in order to work effectively in such environments. Previous research, however, has not examined whether political skill is an indicator of promotability among different rater sources (i.e., bosses, direct reports, and peers). This study attempted to fill such gaps in previous research by examining whether the magnitude of the relationship between political skill and promotability differed depending upon which rater source was evaluating promotability. Using data from 262 practicing target‐managers from around the world, the authors found that target‐managers with more political skill had higher promotability ratings from three different coworker perspectives and the magnitude of the relationship was different for bosses and peers vis‐à‐vis direct reports. Furthermore, peer ratings of task‐related leader behavior mediated the relationship between political skill and boss ratings of promotability. Contributions of this study are discussed, as are limitations, future research directions, and practical implications. Copyright © 2011 John Wiley & Sons, Ltd.